Function Health is a membership-based health platform founded in 2021, based in Austin, Texas, by Mark Hyman, Pranitha Patil, Mike Nemke, Seth Weisfeld, Jonathan Swerdlin and Daniel Swerdlin. Function Health aims to provide a more proactive approach to healthcare, offering members access to a comprehensive suite of lab tests and health data. The company's mission is to empower individuals to take control of their health by providing them with a deeper understanding of their body's functions.
Function Health provides members with access to 160+ lab tests annually, covering various health aspects such as heart health, hormones, thyroid function, nutrients, toxins, and inflammation. These tests are conducted through Quest Diagnostics. Memberships cost $365 per year. Function Health is available in 48 states, excluding Rhode Island, Hawaii, and Puerto Rico. The company also offers add-on tests, such as the GRAIL Cancer Test, brain health tests, and environmental toxin tests, for an additional cost. Function Health acquired Ezra in May 2025, with plans to integrate Ezra's MRI scanning technology into its platform.